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摘要
The simulation of the liquid composite molding process is an important step for the manufacturing of composites with textile reinforcements. However, its fast direct numerical simulation is impossible on the microscale due to computational complexity reasons. We have to resort to the macroscale instead. Here, an essential task is the fast and accurate prediction of the permeability of textile microstructures. For textiles composed of impermeable yarns, we discuss the homogenization of the Stokes equations. This leads to Darcy's law on the macroscale and gives the permeability via the so-called unit cell problems. These equations are then discretized and solved numerically. For textiles composed of permeable yarns, the porosity on both scales is accounted for by a fictitious domain approach in the form of the Stokes/Brinkman equations. The results of our permeability computations in textiles are validated and compared to experimental data.
- 出版日期2010
